Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Allowance for Doubtful Accounts
Balance at Beginning of Year		$ 416	$ 466	$ 327
Additions Charged to Expenses		509	279	571
Deductions	[1]	(339)	(329)	(432)
Balance At End of Year		$ 586	$ 416	$ 466

[1] The deductions related to allowance for doubtful accounts represent accounts receivable which are written off.